Overview
The LT1009CLPE3, produced by Texas Instruments, is a precision-trimmed 2.5-V shunt regulator. This integrated reference circuit is known for its low dynamic impedance and wide operating current range, making it highly versatile in various electronic applications. The device features a maximum initial tolerance of ±5 mV in the LP package, ensuring high accuracy. It also includes an adjustable terminal (ADJ) that allows the reference voltage to be adjusted by ±5% to eliminate system errors. The LT1009CLPE3 is a direct replacement for the LM136-2.5, eliminating the need for an external trim network in many cases.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Reference Voltage (VZ) | 2.495 | 2.5 | 2.505 | V |
| Reverse Dynamic Impedance (rZ) | 0.2 | 0.4 | 0.6 | Ω |
| Temperature Stability (ΔVZ/ΔTemp) | 15 | 25 | 35 | ppm/°C |
| Long-Term Stability | 20 | ppm/kHr | ||
| Operating Temperature Range | 0 | 70 | °C |
Key Features
- Precision Trimmed Reference Voltage: The LT1009CLPE3 has a maximum initial tolerance of ±5 mV, ensuring high accuracy in reference voltage applications.
- Low Dynamic Impedance: With a maximum dynamic impedance of 0.6 Ω, the device offers stable voltage regulation.
- Wide Operating Current Range: The device can operate over a wide current range, making it suitable for various applications.
- Adjustable Reference Voltage: The ADJ terminal allows for ±5% adjustment of the reference voltage to compensate for system errors.
- Temperature Stability: The device exhibits excellent temperature stability with a temperature coefficient of 15 to 35 ppm/°C.
Applications
- 5-V System References: The LT1009CLPE3 is often used as a reference voltage in 5-V systems.
- Analog-to-Digital and Digital-to-Analog Converters (ADC/DAC): It serves as a precise reference voltage for ADC and DAC applications.
- Power Supply Monitors: The device can be used to monitor and regulate power supply voltages.
- Digital Voltmeters and Current-Loop Measurement and Control Systems: It is suitable for precision measurement and control in various electronic systems.
Q & A
- What is the reference voltage of the LT1009CLPE3?
The reference voltage of the LT1009CLPE3 is 2.5 V with a maximum initial tolerance of ±5 mV.
- What is the operating temperature range of the LT1009CLPE3?
The operating temperature range is from 0°C to 70°C for the LT1009C and from –40°C to 85°C for the LT1009I.
- Can the LT1009CLPE3 be adjusted?
- What is the dynamic impedance of the LT1009CLPE3?
The dynamic impedance is a maximum of 0.6 Ω.
- Is the LT1009CLPE3 compatible with other devices?
- What are some common applications of the LT1009CLPE3?
- How does the LT1009CLPE3 ensure temperature stability?
- What is the long-term stability of the LT1009CLPE3?
- Is the LT1009CLPE3 available in different packages?
- Where can I find more detailed specifications of the LT1009CLPE3?
